Something must have changed as TC originally marketed the Max-Ball as having it’s
initial or lower bands under bore size (easy to load) and the
top band over bore size so as to engage the rifling, very similar to Lee REAL concept. Below is the blurb from a 1980 TC catalog. Wonder when they started making the bottom ring larger? I have yet to see any of those.
As far expansion, yep, the Maxi-Ball tends to pencil though most game with little if any expansion unless none is hit. That’s why they came out with the Maxi-Hunter. Doesn’t mean either one doesn’t take game.